Accession Number : AD0305936

Title :   TRACKING A SOUND SOURCE USING CORRELATION TECHNIQUES.

Descriptive Note : Technical rept.,

Corporate Author : COLUMBIA UNIV DOBBS FERRY NY HUDSON LABS

Personal Author(s) : Berman, A. ; Clay, C. S.

Report Date : 15 JUN 1958

Pagination or Media Count : 29

Abstract : A simple harmonic sound source was towed in the Western North Atlantic. The signals were observed at four widely separated hydrophones. The motion of the source caused the frequency of the signal observed to be different from the source frequency by the Doppler relationship. The different frequencies were analyzed with the IBM 650. The position and the track of the source were determined. The circle of error was about 15 mi for a 15-min sample of data and it was less for longer data samples. (Author)

Descriptors :   *HYDROPHONES, *SOUND, *SOUND TRANSMISSION, *UNDERWATER SOUND, ATLANTIC OCEAN, COMPUTERS, CORRELATION TECHNIQUES, SENSITIVITY, TRACKING.

Subject Categories : Acoustic Detection and Detectors
      Acoustics

Distribution Statement : APPROVED FOR PUBLIC RELEASE